Pharmacology Using histological criteria to date endometrial development, which of the following is the earliest sign of ovulation? not related – gyn A Gland coiling B Stromal edema C Neovascularization D Glycogen accumulation 💡 Explanation Using histological criteria to date endometrial development, which of the following is the earliest sign of ovulation? not related - gyn ✓ Correct Answer: D. Glycogen accumulation